I let a car pull in front of me yesterday so the driver and her car could get to where they going.
That driver smiled, waved and drove on.
The driver in the car behind being delayed maybe three seconds started waving his arms and grimacing in what we used to call a not very attractive face.
I’m not really good at lip reading in my rear view mirror but I’m pretty sure the driver behind me wasn’t wishing me well and thanking me for showing some roadway politeness.
The front seat passenger in the car behind me joined in and also started waving his hands and arms in a not very friendly manner.
A random act of kindness results in angry hand gestures.